* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

body,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
textarea,
p,
blockquote,
th,
td,
hr,
button,
article,
aside,
details,
figcaption,
figure,
footer,
header,
menu,
nav,
section {
    margin: 0;
    padding: 0;
    border: 0;
}

/* 默认不要下划线 */
a {
    text-decoration: none;
}

/* 按钮文本不可选 */
button {
    user-select: none;
}

img {
    vertical-align: middle;
}

/* 加载不出来的图片不要显示灰色边框 */
img:not([src]),
img[src=""] {
    opacity: 0;
}

ul,
ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

input,
select,
button,
textarea {
    font-size: 100%;
    font: inherit;
}

html,
body {
    height: 100%;
    overflow-x: hidden;
}